Change-speed gearing



Jul 29, 1924. 3,562,2 8?

A. LAUKHUFF CHANGE SPEED GEARING Filed March 3O 1922 3 Sheets-Sheet 1 Fwal . 6 6 '4 a7 19 w w A yfii I I INVENTOR:

I w- M'- KW 'Jul 29,- 192 1,502,787

. A. LAUKHUFF CHANGE SPEED GEARING Filed March so, 1922' :5 Sheets-Sheet' 2 I N VEN TOR.

' ATTORNEY-5 July 29, 1924.,

. A. LAUKHUFF CHANGE SPEED GEARING FiledMarch 30, 1922 3 Sheets-Sheet 3 INVENTOR.

- ATTORNEYJ- Patented July 29, 1924.

UNIT STATES,

- ALIT'BED'LAUKHUIF, or montage 5;

Q I \M Q Application filed March 30, 1922. Serial To all whom it may concern.

Be it known that I, ALFRED LAUKHUFF, a citizen of the United States, residing at Shorewood,'in the county of Milwaukee and 5 State of'Wisconsin, have invented certain new and useful Improvements in Speed Gearing, of which the following isa specification, reference being had to the accompanying drawing, .forming a partthereof. Y

This invention relates to gearing in which rotary movement is transmitted from one member to another in axial alignment therewith ata difirerent rate of speed.

Themain' objects ofthe invention are to providefsimple, efficient, compact, durable and substantially symmetrical transmission gearing of this class. in which the strains and stresses to. which' it is subjected shall be evenl distributed; to-providejfor reversing the direction ofrotation of the driven member relative to that of the drivingmember; and generally to improve the construction and operation of change-speed transmission gearing. 4

It consists in the construction, arrange mer t-and combination of parts as hereinafter particularly described and pointed out in the claims.

9" In the accompanying drawing like char -'acters' designate the same parts in the several figures.

Figure 1 is an axial section on the line 1-1, Fig. 2, of reversible change-speed gearing embodying the invention; Fig. 2' is .a cross section thereof on the line 2-2,

Fig.- 1; Fig. 3 is an axial section on the:

line 33, Fig. 4,similar to Fig. 1, showing a modification of the gearing; Fig. 4-is 'a cross section on the line 4-4, Fig. 3; and

Fig. 5 is a fragmentary axial section similar to Figs. 1 and 3, of another modification.

Referring 'to Figs. 1 and 2, the gearingcomprises in one of its preferred emhodi-- ments, an' eccentric shaft 1, provided with v an eccentric 2, a gyratory gear 3, mounted on the eccentric 2, a spider or guide member 4, and a housing or case 5*, provided with an internal g'e'ar'6, surrounding and meshing with the gear 3. A

The splder or guide member 4 is composed of two preferably like or similar sections formed 'or'grovidedon opposite sides of the-eccentric supported at o posi*e eccentric Change-' circuit corresponding with the throw 0 or case by bolts 18 and-married taller and gear 3'-with axially Parana; or F1 cnnnon srnnn y I v aligned hollow .slia fts n'd sbearingsilifi s, in which the" S ae \is joiirn'aled nd,

2, asf shown in ig. 1. r

The sections of the spiderfonmember 4 are formed'or provided with spacing lugs-9,;Q extending into and "meeting in.- opening's formed -in the gear .3 and rigidlylc'onrrected into circularguide openings 13 .oth e'ryof the pins .beingrg;provided:with anti-friction B rollers 14 and the'radiu's of the. circular open 7 ings less the radius of the rollers, being equal to or corresponding with the e'ccentrici ty' ilorthrow of the eccentric 2,-so as to confine-or hold every part 'of the gear 3 to 'a 'gyratogy f he eccentric.

'Toreduce friction, ballorlo er "16 are preferably introduced J centric 2 and gear 3. I The housing or case 5 is cornpbeedoi-two-B preferably like or symmetrical,sections15,11!. formed with axially aligned fhub's which are rotatably mounted-Ion the hollow shafts or bearings 8, and the internal.gear-' fi'fiis" fastened between the sections ofthewho v j'ng 9 centric or coaxial with ith'e' sliaft .with the gyrato gear 3. a The hollow slafts' and armgs, journaled and supported' in stationary bear"? mg 20, coaxial with thegeccentria-sha'ft l. or reversing the [d rection of, rotation," the gearing is providedL-withan' extra trans mission member such asa glglley 22, 10.0 y mounted on one of the sha or-fibearing'sffi, 9 as shown --in Fig. 1 and provide'd withjn axially shiftable clutch member 23, having internal and externalconi'cal faces adapte to cooperate with corresponding faces of v clutch members 24 and'25, for operatively connecting the pulley or transmission member 22 with either the spider or.'.guide"mem-, her 4, orthe case5 and interhalgear f The clutch member 24 is keyed orfixed onythe shaft or hearing 8 between the pulley or m mber 22 and the hub of the case 5, and the member 25 isformed on or atta'ehed to the adjacent side of the case. On the op osite side of the case 5 an axially shifta 1e clutchmember 27, feathered or otherwise non-rotatab ly mounted on a stationary part *of the gearing, such as the adjacent main bearing20, is'adapted by engagement with conical clutch members 28 and '29 fixed on the adjacentshaft or hearing 8 and the adjacent side of the case 5, to lock and hold eitherthe spider or guide member 4 or the case.5 withthe internal gear 3, against rotation.

The clutch members 23. and 27 are pref erably connected and operated by any suitable means (notsh'own), so that when the Qmember 23 is shifted out of-engagement ,with the member 24 into engagement. with the member 25, at one side of thecasej, the

member 27 will be simultaneously shifted out of-engagement with the member 29 into engagement with the member 28 at the op-.

.posite side or the case, as-shown in Fig. l, therebylockingthe guide member 4 against rotation and operatively connecting the pulley or transmission member 22'through the case 5 with" the internal gear 6. Under these conditions, the pulley o transmission member 22, assuming it .to be modification of the gearing 1n which the the driven member of the gearing, will be rotated with the case v5 and internal gear f? 6 at a reduced speed from the eccentric ---shaft .1;and in the same direction. as indicated by full line arrows, Fig. 2. By shiftingQthe clutch members 23 and 27 in the opposite direction into engagement with theanbmbers 24 and 29 respectively, the case 5 and internal gear 6 will be locked and held against rotation and the pulley or driven member 22 will be operati'vely connected with the spider or guide member 4 and rotated.therewith in a direction reverse to that of the eccentric shaft or driving rnember 1, as indicated by dotted arrows,-

Fig. 2. In an intermediate position pf the clutch members 23 and 27, the driven memher of the gearing is disconnected from the driving member.

While ordinarily the eccentric shaft 1 will be the driving member of the gearing, and eitherthe case 6 with the internal gear 6, rotated in the same direction, or the spider or guide member 4 rotated in the opposite direction therefrom, will operate as the driven member for the transmission of rotary motion at a reduced speed, the con- :lections may be reversed, so that the eccentric shaft will operateas the driven member to transnut rotary motion atan increased speed.

'lhe eccentric '2 and gyratory' gear 3 may.

a be counterbalanced so that the gearing will of the eccentric shaft.

run truly and evenly, by counterweights 31,

.both, the eccentric shaft, which is the driving member of the gearing, is shown as an extension of or attached to the armature shaft of the motor, and power 15 taken off 80.

ata reduced speed from the extended shaft or bearing 8' of'the spider or guide mem her 4" on the opposite side of the case from the motor. With this arrangement the rotary movement of the driven member is not reversible, and the guide pins 12, which are secured at the ends in the-sections of the spider or guider'nember 4', and are pro- 'vided with anti-friction rollers 14' within circular guide openings 13' in the gyratory gear 3 may serve also to tie or fasten the sectionS'of the member 4' together, and the bolts-10 may be dispensed with. ,In other respects, the gearing is substantially the same in construction and operation as that shown in Figs. 1 and 2. b Referring to Fig. 5, showing another spider or guide member 4 is permanently anchored and held against rotation, the eccentric shaft 1 and eccentric 2 constitute the driving member, and rotary motion is taken off from the gearing at a reduced speed from the case 5- or internal gear 6,

which may serve itself as a pulley, or from 105.

-ment' ofthe guide pins 12 and circu ar guide openings 13' shown in Figs. 1 and 2, or the arrangement of guide pins 12' and circular guide openings 13' shown in Figs.

3 and 4, may be used. I

,In each of the arrangements shown the sections of the spider or guide member 4 or 4 located on opposite sides of and connected with each other through the interposed gyratory' gear 3 or 3. 'by bolts 10 or by pins 12, serve to confine and guide said gear in a plane perpendicular to the axis,

wearer Various changes in the details of construction and arrangement of parts of the gearing other than those specifically illustrated and described may be made without departure from the principle and scope of the invention as defined in the following claims.

I claim:

and guide pins fastened in one member and extending freely into circular guide openings in the other. i

2. In change-speed gearing the combination of a shaft provided with an eccentric, a

gyratory gear mounted on the eccentric, an internal gear supported concentrically with said shaft on opposite sides of and in mesh with the yratory gear, a guide member composed of sections supported concentrically with said shaft on opposite sides of the gyratory gear and provided with spacing lugs extending through openings in the intervening gyratory gear clear thereof, bolts passing through said sections and lugs and rigidly connecting the sections with each other, and connections between the guide member and gyratory gear consisting of pins .fastened to one and provided with rollers within circular openings of larger diameter in the other. v

3. In change-speed gearing the. combination of a shaft provided with an eccentric, a gyratory gear mounted on the eccentric, a guide member composed of sections located and supported on opposite sides of the cocentric coaxial with the eccentric shaft and rigidly securedto each other by bolts pass ing through openings in said gear, an internal gear supported concentrically with the eccentric shaft in mesh. with the gyratory gear, and guide pins and circular guide openings loosely connecting the guide member and gyratory gear, the pins being secured in one member and the radius of the guide openings in intowhich the pins pass less the radius of the pins, corresponding with the throw of the eccentric.

4. In change-speed gearing the combinavthe internal gear or the against rotation and for operatively conthe other member tion of a shaft provided with an eccentric, a gyratory gear mounted on the eccentric, a guide member composed of sections mounted and supported on opposite sides of said gear concentric with'the eccentric shaft and rigidly connected witheach other by bolts passing loosely through openings in'said gear, circular guide openings in one member and pins passing thereinto from the other memher and holding them in a certain relation to each other, a case composed of sections located and supported on opposite sides of the guide member, and an internal gear carried by the case coaxial with the eccentric shaft in mesh with the gyratory gear.

5. In change-speed gearing the combination of an eccentric shaft provided with an eccentric, a g vratory gear mounted on the eccentric, a guide member rotatably-mounwd coaxially with the eccentric shaft and movably connected with said gear by pins passing from one member into circular openings in the other member. an internal gear rotatably mounted coaxially with the eccentric shaft and meshing with the gyratory gear, a rotary transmission member mounted coaxiaily with he eccentric shaft and in ternal gear, and clutches for locking either guide member necting either ofthem with said rotary transmission member.

6. in change-speed gearing the combination of an eccentric shaft provided with an eccentric, a gyratory gear mounted on the eccentric, a guide member composed of sections connected together to movement of the gear corresponding wit the throw of the ecceiitric and provided with axially aligned bearings in which the eccentric shaft .is journaled on opposite sides 0 the eccentric, a case composed "of sections rotatably mounted coaxially with the eccentric shaft on opposite sides of the guide member, an internal gear carried by the case coaxially with the eccentric shaft and guide member and meshing with the gyratory gear, a rotary transmission member mounted coaxially with the eccentric shaft, guide member and internal gear at one side of the case, a clutch for'holding either the case with the internal gear or the guide member against rotation, and a clutch for operatively connecting the case and internal gear or the guide member with said rotary transmission member.

h witness whereof nature.

ALFRED LAUKHUFF.

I hereto afiix my sigpermit gyratorg 

